Home / 20,201.68-27,886.92-13,581.52

Finding the Fourth Proportional to 20,201.68, 27,886.92 and 13,581.52

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Solution

The fourth proportional to 20,201.68, 27,886.92 and 13,581.52 is: 18,748.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,201.68 : 27,886.92 = 13,581.52 : x
  2. Step 2: Convert to fraction form
    20,201.68/27,886.92 = 13,581.52/x
  3. Step 3: Cross multiply
    20,201.68x = 27,886.92 × 13,581.52
  4. Step 4: Simplify right side
    20,201.68x = 378,746,761.72
  5. Step 5: Solve for x
    x = 378,746,761.72/20,201.68
  6. Step 6: Final answer
    x = 18,748.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.